How to solve this simultaneous linear equation by elimination method

How to solve this simultaneous linear equation by elimination method 21 y

12x +x-y\6=2(making the denominator same)
12x+x-y    =2*6
13x -y       =12 --------------(1)
3x-2x+y\3=1(making the denominator same)
X+y            =3 --------------(2)
then u have to continue with the normal elimination
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